odd even checker


#include 

int main() {
    int ch; float t;
    printf("1.C=F  2.F=C  3.C=K  4.K=C\nChoose: ");
    scanf("%d", &ch);
    printf("Temp: "); scanf("%f", &t);

    if (ch==1) printf("%.2f°F\n", t*9/5+32);
    else if (ch==2) printf("%.2f°C\n", (t-32)*5/9);
    else if (ch==3) printf("%.2fK\n", t+273.15);
    else if (ch==4) printf("%.2f°C\n", t-273.15);
    else printf("Invalid!\n");
}


1.C=F  2.F=C  3.C=K  4.K=C
Choose: 1
Temp: 144
291.20┬░F